I haven't been to Ibiza since Sep/Oct 2015 but for reasons not connected to my age (work, other destinations, birth of child in '18, pandemic)
Big clubbing nights out at home have been limited for similar reasons. Also, my current crowd is more into standing around bars and what I do feel too old for is going clubbing solo. When I have gone out, stamina or recovery haven't been issues though. I am invincible...
Planning a return to Ibiza this year with my mates to mark 3 of us reaching the big 5-0.
(initially thought July but a stupid war and resulting need to get our affairs in order and prepare to relocate pushed it back to likely September)